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Government safety regulators are investigating two reports of 2012 Jeep Liberty crossovers that had fires in the driver's side doors.

In both cases, owners reported smoke come from the driver's side door, followed by actual flames, according to the National Highway Traffic Safety Administration said Friday. The car's master power window switch is at the center of the probe.

As the smoke and fire broke out, the power windows and power door locks operated erratically. In an eerie touch, they started operating on their own. NHTSA says in both cases, drivers stopped the vehicles and got out through the passengers' sides doors.

Chrysler Group, maker of the Jeep brand, issued a statement: "Customer safety is paramount at Chrysler Group. Accordingly, our engineers are investigating these two reports while also fully supporting the inquiry initiated by the National Highway Traffic Safety Administration."

One of the two owners told NHTSA that the problem reoccurred even after the vehicle was repaired. In both cases, the fire meant that the vehicle could no longer be operated and it had to be towed from the scene.